Demographic Effects on Longitudinal Semantic Processing, Working Memory, and Cognitive Speed

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dc.contributor University of Helsinki, Helsinki Collegium for Advanced Studies en
dc.contributor.author Vonk, Jet
dc.contributor.author Higby, Eve
dc.contributor.author Nikolaev, Alexandre
dc.contributor.author Cahana-Amitay, Dalia
dc.contributor.author Spiro III, Avron
dc.contributor.author Albert, Martin L
dc.contributor.author Obler, Loraine K.
dc.date.accessioned 2020-11-02T06:52:01Z
dc.date.available 2020-11-02T06:52:01Z
dc.date.issued 2020
dc.identifier.citation Vonk , J , Higby , E , Nikolaev , A , Cahana-Amitay , D , Spiro III , A , Albert , M L & Obler , L K 2020 , ' Demographic Effects on Longitudinal Semantic Processing, Working Memory, and Cognitive Speed ' , Journals of Gerontology. Series B: Psychological Sciences & Social Sciences , vol. 75 , no. 9 , pp. 1850–1862 . https://doi.org/10.1093/geronb/gbaa080 en
dc.identifier.issn 1079-5014
dc.identifier.other PURE: 140213092
dc.identifier.other PURE UUID: fd886ca8-8e19-4c7e-b6a8-6cd940522d28
dc.identifier.other ORCID: /0000-0001-8634-5947/work/83054282
dc.identifier.other WOS: 000608484400010
dc.identifier.uri http://hdl.handle.net/10138/320995
dc.description.abstract OBJECTIVES To better understand and compare effects of aging and education across domains of language and cognition, we investigated whether 1) these domains show different associations with age and education, 2) these domains show similar patterns of age-related change over time, and 3) education moderates the rate of decline in these domains. METHODS We analyzed data from 306 older adults aged 55-85 at baseline of whom 116 returned for follow-up 4-8 years later. An exploratory factor analysis identified domains of language and cognition across a range of tasks. A confirmatory factor analysis analyzed cross-sectional associations of age and education with these domains. Subsequently, mixed linear models analyzed longitudinal change as a function of age and moderation by education. RESULTS Two language domains, i.e., semantic control and semantic memory efficiency, and two cognitive domains, i.e., working memory and cognitive speed, were identified. Older age negatively affected all domains, but semantic memory efficiency and higher education positively affected all domains except cognitive speed at baseline. In language domains, a steeper age-related decline was observed after age 73-74 compared to younger ages, while cognition declined linearly with age. Greater educational attainment did not protect the rate of decline over time in any domain. DISCUSSION Separate domains show varying effects of age and education at baseline, language versus cognitive domains show dissimilar patterns of age-related change over time, and education does not moderate the rate of decline in these domains. These findings broaden our understanding of age effects on cognitive and language abilities by placing observed age differences in context. fi
dc.format.extent 13
dc.language.iso eng
dc.relation.ispartof Journals of Gerontology. Series B: Psychological Sciences & Social Sciences
dc.rights en
dc.subject 515 Psychology en
dc.subject 6121 Languages en
dc.title Demographic Effects on Longitudinal Semantic Processing, Working Memory, and Cognitive Speed en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1093/geronb/gbaa080
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion
dc.contributor.pbl
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